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3 years ago

10

Why don't parrallel lines cross

2 answers:

Lelechka [254]3 years ago

7 0

In projective geometry, any pair of lines<span> always intersects at some point, but </span>parallel lines do not intersect<span> in the real plane. The </span>line<span> at infinity is added to the real plane. ... In the projective plane, the two opposite directions of a </span>line<span> meet each other at a point on the </span>line<span> at infinity.

</span>

anzhelika [568]3 years ago

4 0

Because they're parallel which means they stay side by side the whole time with the same distance between them

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The local food pantry has 1, 600 cans of fruit. They give away 155 cans of fruit each week. Assuming no new donations are made,

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4 years ago

hammer [34]

Answer:

a) $y=-3950\cdot{x}+21500$

b) f(x) $=21500\cdot{(0.7953)^x}$

c) Year 1: Linear $17550, exponential $17099

Year 4: Linear $5700, exponential $8601

d) Exponential model

e) The linear model depreciates the value quicker than exponential model long term around 4 years

Step-by-step explanation:

a) At year 0 the price is 21500 and at year 2 the price is 13600

WE can use points (0,21500) and (2,13600)

We can determine the gradient

$m=(13600-21500)/(2-0)=-3950$

We can use the point slow formula:

$y-y_1=m\cdot{(x-x_1)}$

$y-21500=-3950\cdot{(x-0)}$

$y=-3950\cdot{x}+21500$

b) We can use the following equation:

f(x) $=a\cdot{(1+r)^x}$

f(x) is the depreciation value after amount of time t, a is the new value, r is the rate of depreciation and x is the time.

$13600=21500\cdot{(1+r)^2}$

$r=-0.2047$

The depreciation rate is 20.47% and is negative because it decreases the new value of the car

c) Year 1:

$y=-3950\cdot{1}+21500=17550$

f(x) $=21500\cdot{(0.7953)^1}=17099$

Year 4:

$y=-3950\cdot{4}+21500=5700$

f(x) $=21500\cdot{(0.7953)^4}=8601$

d) Year 2

$y=-3950\cdot{2}+21500=13600$

f(x) $=21500\cdot{(0.7953)^2}=13598$

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3 years ago

4.25 -2.5x = 14.75<br> I need help

shtirl [24]

$\text {Hey! Let's Solve this Equation!}$

$\text {\underline {The First Step is to do Keep Change Change (KCC)}}$

$\text {Keep: 4.25}\\\text {Change: - into +}\\\text {Change: 2.5x into -2.5x}$

$\text {\underline {The Next Step is to Flip the Equation}}$

$\text {Before: 4.25+-2.5x=14.75}\\\text {After: -2.5x+4.25=14.75}$

$\text {\underline {The Next Step is to Subtract 4.25}}$

$\text {-2.5x+4.25-4.25=14.75-4.25=10.5}\\\text {-2.5x=10.5}$

$\text {\underline {The Final Step is to Divide -2.5}}$

$\text {-2.5x/-2.5=10.5/-2.5}$

$\text {Remember that Dividing a Positive to a Negative will Equal a Negative.}$

$\text {Your Answer Would Be:}$

$\fbox {x=-4.2}$

$\text {Best of Luck!}$

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